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CN-224202724-U - Test bed for loading load in three stages

CN224202724UCN 224202724 UCN224202724 UCN 224202724UCN-224202724-U

Abstract

The utility model discloses a test bed for loading load in three stages, which relates to the technical field of vehicle engineering and comprises a platform, wherein a fixing frame is arranged on the platform. Two supporting seats are arranged at the top of the platform. According to the utility model, the rotating frame is driven to rotate by the oil cylinder, so that the first connecting rod and the second connecting rod are driven to move oppositely, and the two ends of the anti-rolling torsion bar are subjected to opposite force. The design can simulate the complex stress situation born by the anti-rolling torsion bar in the actual operation with high precision, and compared with the traditional mode, the reduction degree of the actual operation working condition of the anti-rolling torsion bar is greatly improved. Based on the method, the performance of the anti-rolling torsion bar is evaluated through force change data fed back by the force sensor, so that the fatigue life and the performance reliability of the anti-rolling torsion bar in actual operation can be reflected more accurately, and a more reliable basis is provided for quality control and performance optimization of products.

Inventors

  • GU HUA
  • HU QIAN

Assignees

  • 上海天佑铁道新技术研究所股份有限公司

Dates

Publication Date
20260505
Application Date
20250514

Claims (8)

  1. 1. The test bed for loading the load in three stages comprises a platform (1), and is characterized in that a fixing frame (2) is arranged on the platform (1); Two supporting seats (3) are installed at the top of platform (1), two supporting seats (3) are used for installing anti-side-rolling torsion bar (4), the top of platform (1) is provided with mobilizable motion pole mechanism (5), motion pole mechanism (5) are used for the fatigue test of anti-side-rolling torsion bar (4).
  2. 2. A test bench for loading loads in three stages according to claim 1, characterized in that the top of the platform (1) is fixedly connected with a base (6), and the base (6) is provided with a rotatable turret (7).
  3. 3. A three-stage load-carrying test stand according to claim 2, wherein the motion bar mechanism (5) is composed of a first link (51) and a second link (52), and the first link (51) is provided with a force sensor (53).
  4. 4. A three-stage load-carrying test stand according to claim 3, wherein the first and second links (51, 52) are hinged to the turret (7), and the first and second links (51, 52) are located on opposite sides of the bottom of the turret (7), respectively.
  5. 5. A three-stage load-carrying test stand according to claim 3, wherein the first (51) and second (52) links are each rotatably connected to the anti-roll torsion bar (4).
  6. 6. A three-stage load-carrying test stand according to claim 2, characterized in that two of the holders (2) are provided, a cross beam (8) being provided between the two holders (2).
  7. 7. The three-stage loading test stand according to claim 6, wherein the beam (8) is provided with an oil cylinder (9), and the oil cylinder (9) is provided with a connecting rod three (10).
  8. 8. A three-stage loading test stand according to claim 7, characterized in that the three links (10) are hinged to the turret (7).

Description

Test bed for loading load in three stages Technical Field The utility model belongs to the technical field of vehicle engineering, and particularly relates to a test bed for loading loads in three stages. Background The anti-rolling torsion bar is a main balance component of the rail transit vehicle, balances the vehicle body in the running of the rail transit vehicle, and ensures the running stability and safety of the vehicle body. While between the installation of the anti-roll torsion bar apparatus on the vehicle body, fatigue verification of the apparatus for long-term operation is required to ensure the performance of the anti-roll torsion bar apparatus. At present, the existing anti-side rolling torsion bar fatigue test bed mostly adopts a single loading mode in terms of loading load, and is difficult to accurately simulate the complex dynamic load working condition born by the anti-side rolling torsion bar in actual operation. In actual operation, the load applied to the anti-roll torsion bar is not constant, but rather, the anti-roll torsion bar shows obvious stepwise characteristics along with the change of the running state of the train. For example, in the starting stage of the train, the acceleration change is large, the load born by the anti-rolling torsion bar is rapidly increased, in the normal operation stage, the load is relatively stable, certain fluctuation still exists, and in the braking stage, the load is rapidly changed. The existing test bed cannot accurately simulate and load in stages according to the load characteristics of different stages, so that a large deviation exists between a test result and an actual condition, and the fatigue life and the performance reliability of the anti-rolling torsion bar in actual operation cannot be accurately estimated. Disclosure of utility model The utility model aims to solve the technical problems in the prior art, and provides a test bed for loading loads in three stages. The aim of the utility model can be achieved by the following technical scheme: The test bed for loading the load in three stages comprises a platform, wherein a fixing frame is arranged on the platform. The top of platform is installed two supporting seats, two the supporting seat is used for installing anti-side-rolling torsion bar, the top of platform is provided with mobilizable motion lever mechanism, motion lever mechanism is used for anti-side-rolling torsion bar's fatigue test. As a further scheme of the utility model, the top of the platform is fixedly connected with a base, and a rotatable rotating frame is arranged on the base. As a further scheme of the utility model, the motion rod mechanism consists of a first connecting rod and a second connecting rod, and a force sensor is arranged on the first connecting rod. As a further scheme of the utility model, the first connecting rod and the second connecting rod are hinged with the rotating frame, and the first connecting rod and the second connecting rod are respectively positioned at two sides of the bottom of the rotating frame. As a further scheme of the utility model, the first connecting rod and the second connecting rod are both in rotary connection with the anti-rolling torsion bar. As a further scheme of the utility model, two fixing frames are arranged, and a cross beam is arranged between the two fixing frames. As a further scheme of the utility model, an oil cylinder is arranged on the beam, and a connecting rod III is arranged on the oil cylinder. As a further scheme of the utility model, the third connecting rod is hinged with the rotating frame. Compared with the prior art, the utility model has the beneficial effects that: According to the application, the rotating frame is driven to rotate by the oil cylinder, so that the first connecting rod and the second connecting rod are driven to move oppositely, and the two ends of the anti-rolling torsion bar are subjected to opposite force. The design can simulate the complex stress situation born by the anti-rolling torsion bar in the actual operation with high precision, and compared with the traditional mode, the reduction degree of the actual operation working condition of the anti-rolling torsion bar is greatly improved. Based on the method, the performance of the anti-rolling torsion bar is evaluated through force change data fed back by the force sensor, so that the fatigue life and the performance reliability of the anti-rolling torsion bar in actual operation can be reflected more accurately, and a more reliable basis is provided for quality control and performance optimization of products. Drawings FIG. 1 is a perspective view of the present utility model; fig. 2 is an enlarged view of a portion of fig. 1a in accordance with the present utility model. The device comprises a platform 1, a fixed frame 2, a supporting seat 3, a torsion bar for resisting side rolling 4, a motion bar mechanism 5, a connecting bar 51, a connecting bar 52, a connecting